Module: Prometheus::Client::Formats::JSON

Defined in:
lib/prometheus/client/formats/json.rb

Overview

JSON format is a deprecated, human-readable format to expose the state of a given registry.

Constant Summary collapse

MEDIA_TYPE = 
'application/json'
SCHEMA = 
'prometheus/telemetry'
VERSION = 
'0.0.2'
CONTENT_TYPE = 
%(#{MEDIA_TYPE}; schema="#{SCHEMA}"; version=#{VERSION})
MAPPING = 
{ summary: :histogram }

Class Method Summary collapse

Class Method Details

.marshal(registry) ⇒ Object 



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# File 'lib/prometheus/client/formats/json.rb', line 18

def self.marshal(registry)
  registry.metrics.map do |metric|
    {
      baseLabels: metric.base_labels.merge(__name__: metric.name),
      docstring:  metric.docstring,
      metric: {
        type:  MAPPING[metric.type] || metric.type,
        value: metric.values.map { |l, v| { labels: l, value: v } },
      },
    }
  end.to_json
end